AD1836A: Multichannel 96 kHz Codec 0 pages

Multichannel 96 kHz Codec
AD1836A
FEATURES
5 V multichannel audio system
Accepts 16-/18-/20-/24-bit data
Supports 24-bit and 96 kHz sample rate
Multibit Ó-Ä modulators with data directed
scrambling
Differential output for optimum performance
ADCs: –92 dB THD + N, 105 dB SNR and dynamic range
DACs: –95 dB THD + N, 108 dB SNR and dynamic range
On-chip volume control with "auto-ramp" function
Programmable gain amplifier for ADC input
Hardware and software controllable clickless mute
Digital de-emphasis processing
Supports 256 × fS, 512 × fS, or 768 × fS master clock
Power-down mode plus soft power-down mode
Flexible serial data port with right justified, left justified, I2S
compatible, and DSP serial port modes
TDM interface mode supports 8 in/8 out using a single
SHARC® SPORT
52-lead MQFP (PQFP) plastic package
APPLICATIONS
Home theater systems
Automotive audio systems
DVD recorders
Set-top boxes
Digital audio effects processors
PRODUCT OVERVIEW
The AD1836A is a high performance, single-chip codec that
provides three stereo DACs and two stereo ADCs using ADI’s
patented multibit Ó-Ä architecture. An SPI® port is included,
allowing a microcontroller to adjust volume and many other
parameters. The AD1836A operates from a 5 V supply, with
provision for a separate output supply to interface with low
voltage external circuitry. The AD1836A is available in a 52-lead
MQFP (PQFP) package.
FUNCTIONAL BLOCK DIAGRAM
DIGITAL
FILTER
Ó-Ä
DAC
DAC1L
DAC1R
CLOCK
COUT MCLK
VREF
CONTROL PORT
CCLK CDATA CLATCH
SERIAL
DATA
I/O
PORT
DIGITAL
FILTER
Ó-Ä
ADC1L
48kHz/96kHz
PGA
Ó-Ä
ADC2L
48kHz
DIGITAL
FILTER
48kHz
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
ALRCLK
ABCLK
ASDATA1
ASDATA2
CAPL1
CAPL2
CAPR1
CAPR2
PD/RST AVDD AGND DVDD DGND
2 4 3 2
MUX
PGA
Ó-Ä
ADC2R
48kHz
DIGITAL
FILTER
48kHz
DIGITAL
FILTER
Ó-Ä
DAC
DAC2L
DAC2R
VOLUME
DIGITAL
FILTER
Ó-Ä
DAC
DAC3L
DAC3R
FILTR
ADC1L
ADC1R
ADC2L1
ADC2L2
ADC2R1
ADC2R2
MUX
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
FILTD
48kHz/96kHz
DIGITAL
FILTER
Ó-Ä
ADC1R
48kHz/96kHz 48kHz/96kHz
Figure 1.
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Rev. 0